Intent 1:
To limit the probability that the tile substrate
will have an inadequate resistance to water.
This
is to limit the probability of the deterioration of the substrate,
which could lead to:
- the generation of pollutants, on surfaces or within
assemblies, from biological growth or from materials that become unstable
on wetting, and
- where the substrate supports or serves as a required
environmental separation element, the failure of such elements, which
could lead to:
- condensation,
- precipitation ingress,
- pollutant ingress, or
- compromised thermal performance of components intended
to resist heat transfer.
This is to limit the probability of:
- an inadequate control of temperatures of interior spaces,
- the further generation of pollutants from biological
growth or from materials that become unstable on wetting, or
- deterioration, which could lead to further compromised
integrity of environmental separators.
This is to limit the probability of:
- negative effects on the air quality of indoor spaces,
or
- the inadequate thermal comfort of persons.
This is to limit the probability of harm to persons.